Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1987-06-25
1988-08-16
Coven, Edward M.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
604 22, A61M 100
Patent
active
047641657
ABSTRACT:
An ophthalmic aspirator-irrigator system for use during cataract surgery is disclosed. The system frees both hands of the surgeon for the surgical tasks and leaves the automatic operation of the system to a single control input operated by a foot pedal. The pedal controls both the aspiration and ejection functions as well as their respective speeds. The ophthalmic aspirator-irrigator system essentially comprises a hand-held device, a control box operable by the foot pedal and a power cord connecting the device with the box. A source of fluid is connected via a tube to the device to effect the irrigation function. The control box includes a power source and a circuit coupled to the source and via the cord to the device. Preferably, the circuit includes a bridge output network controlled by a linear motion slide type potentiometer controlled by the foot pedal. The circuit further includes dual DC amplifiers and a pulse-width modulated gate circuit to operate the device bidirectionally with a smooth, continuous and variable speed. The foot pedal has two zero control positions: in its off, non-depressed position and in its off position about midway through the pedal's downward travel. A vacuum limiting valve assembly permits the system readily to be adapted to posterior capsule polishing following the break-up and removal of the cortex.
REFERENCES:
patent: 4184510 (1980-01-01), Murry et al.
patent: 4299221 (1981-11-01), Phillips et al.
patent: 4428748 (1984-01-01), Peyman et al.
patent: 4493695 (1985-01-01), Cook
patent: 4508532 (1985-04-01), Drews et al.
patent: 4508533 (1985-04-01), Abramson
patent: 4516398 (1985-05-01), Wuchinich
patent: 4517977 (1985-05-01), Frost
patent: 4609368 (1986-09-01), Dotson, Jr.
Brochure of Cooper Vision Surgical Co. re their "Cavitron/Kelman I/A System III"--six pages--undated.
Arsenault Michael J.
Reimels Harry G.
Walsh David A.
Coven Edward M.
Mentor O & O, Inc.
LandOfFree
Ophthalmic aspirator-irrigator with valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ophthalmic aspirator-irrigator with valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophthalmic aspirator-irrigator with valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-598298